Before DJ Diesel — a k a Shaquille O’Neal — can raise the roof, they’ll have to lower the floor.

NBA legend Shaq is set to spin on Saturday at Joey Morrissey’s HQ2 nightclub at the Ocean Resort Casino in Atlantic City.

But at 7-foot-1 and weighing 330 pounds, Diesel can’t fit in the DJ booth.

So a crew of carpenters have been working tirelessly to lower the floor of the booth by 2 feet so that the legendary baller can squeeze behind the decks. We’re told that at first, Morrissey wanted to just rip the roof off the booth, but an inspection proved it was made of solid steel — making that option even more of a production than lowering the floor.

We’re told that Shaq is due to arrive at the club via helicopter.

Shaq was on the winning team of the NBA Finals four times — and before any of those rings, in 1993, he released his first album, called “Shaq Diesel.”

Now an “Inside the NBA” commentator, Shaq has been DJing since around 2015, and has performed for crowds of up to 1,000 at events including superstar DJ Diplo’s Mad Decent Pool Party and his own Shaq’s Fun House event, both in Miami.